following my post yesterday, the hong kong chip reverted to form. "No service" error and inability to get back onto CSL.

Originally Posted by josrh

The solution I posted before for baseband 02.28.00 with Universal v600 is still working flawlessly for already 2 weeks (3G disabled for incoming calls). Network: Fido.

This solution still working flawlessly now for 3 weeks...

Originally Posted by josrh

This solution still working flawlessly now for 3 weeks...

Would just like to keep this topic up to date since noone has posted for over 2 months..

As we all know, 2.2.1 firmware (2.30.03 baseband) has closed the loophole used by yellowsn0w and anyone who has updated to this firmware remains LOCKED.

But thanks to the DevTeam's work, 2.2.1 firmware could be jailbroken and it only TIME will tell us when 2.2.1 can be fully unlocked. We commend the DevTeam's efforts of course.

However, if you are LOCKED on 2.2.1 firmware, you can use a proxy-sim (AKA turbosim, piggy-back sim) to unlock the baseband and use your iPhone as normal.

As ZF_ and others noted, there are many risks in buying turbo sims. Some Fail. Some are out of date. Some are just FAKE.

So before you buy ANY unlocking sim for your iPhone, DO YOUR RESEARCH. Buy from a reliable source and make sure you are receiving a product that WILL unlock your 2.2.1 firmware and is STABLE/UP-TO-DATE.

Regards,

KLP

Originally Posted by iGun 4 Fun

So before you buy ANY unlocking sim for your iPhone, DO YOUR RESEARCH. Buy from a reliable source and make sure you are receiving a product that WILL unlock your 2.2.1 firmware and is STABLE/UP-TO-DATE.

none is the only unbiaised conclusion from that research would be to buy an iPhone first generation, which can be fully unlocked already, or ask your carrier to unlock your 3G iPhone

Uh, I think you missed out on the *other* unbiased conclusions.

Namely, buy an iPhone 3G and software unlock it.

or, buy a factory unlocked iPhone 3G from one of the countries that sells them.

so yea I didn't have time to read all 78 pages.. but from what I've read it doesn't sound like xsim works with 3g 2.2.1?



Thx

the 'as normal' is very optimistic ............

as far as I know, there is no hardware solution that works 'as normal'.

(rebel card has 3G working, if you don't mind loosing the ability to receive calls ...e tc.....)

Originally Posted by iGun 4 Fun

you can use a proxy-sim (AKA turbosim, piggy-back sim) to unlock the baseband and use your iPhone as normal.

KLP

Originally Posted by digitalfrog

the 'as normal' is very optimistic ............

as far as I know, there is no hardware solution that works 'as normal'.

(rebel card has 3G working, if you don't mind loosing the ability to receive calls ...e tc.....)

nvm im using i-smartphone and it works for edge and phone calls... of course 3g doesn't work on tmobile.

Originally Posted by deco

Hi guys,

First of all I want to thank everybody who sent me their logs so I could see if the *sim solutions were using different methods.

Though it may sound a little frustrating to some of you who believe this would work out if we could find a tweak to the methods implemented by the 'almost-there' solutions.

By collecting all the data and checking the logs to see how each sim dealt with the IMSI information (something like your ID on the network) I could compare legit, legit with *sim, locked sim + *sim.

My conclusion is as follows:

All of the tested solutions use IMSI solutions that are not appropriate and could possibly get you in deep trouble.

Here's a little explanation of why it worked before and why it's not working anymore (and possibly will not work ever)

People found out that the iPhone asked for your IMSI twice, the first time used to be for the iPHone itself, and the second time was relayed to the network for identification. What they did was they created a program that would respond to the first request with a IMSI that belonged to ATT network so that the iPHONe would believe it was working with an ATT sim card, but to the second request the program would reply with your own IMSI and this would be sent to the network which would make your proper identification in the network.

What changed?

Apple got smart and changed how this works. Now the requests aren't so simple and so far it seems to us that it's not possible to fake the IMSI using the same techniques that were used before.

An example of what could be happening:

the iPhone asks your SIM for it's IMSI and then relays that same IMSI everytime it's needed by the network without consulting your SIM again and again.

This way if we give the iPhone a fake IMSI, it'll relay the fake IMSI to the network which won't work as a stable, safe and legit (as far as networking goes) way.

What's my plan ?

I don't plan on giving up just yet, I believe much has to be learned about the baseband before we can rule out the *sim solutions. I will keep working on this at the same pace I have been (one-two hours a day).

The next thing on my plate now is to attempt reversing some of the baseband in search of IMSI related or pretty much any SIM related calls. If I succeed in doing that I plan on using that information to try and create a reliable and safe way of using *sim solutions.

I would advise everyone who has one of these chips to stop using them. Even though you might think it's ok, it's not ok because pretty much what you are doing is using a fake ID at a store or a fake credit card.

Also for those who're using ZeroG, it's doing basically the same thing, so stay away from ZeroG as well.

Don't throw your turbo-sim or whatever other sim you have away. Keep it with you because if someday we can find a proper solution they might be useful.

I'll keep looking at logs of other solutions to see if they are using the same stuff but until it's safe to use a solution for a daily basis I would recommend that you guys keep watching the forums until it's proven by reliable people that such solution would work properly.

This is my two cents about this subject.

Thanks for everyone who helped me.

I'm confused and not sure if this applies to what I'm doing. I need to know if I can do this if it works and if I will get into any problems.I'm looking to used an old iphone that has already been disconnected, the rebel sim card and simgo card as the carrier. Will I get into any trouble through the main carrier even though it's a disconnected phone and will it affect me in any way???

Originally Posted by iphone3glover

I'm confused and not sure if this applies to what I'm doing. I need to know if I can do this if it works and if I will get into any problems.I'm looking to used an old iphone that has already been disconnected, the rebel sim card and simgo card as the carrier. Will I get into any trouble through the main carrier even though it's a disconnected phone and will it affect me in any way???

The technique used in these *sim adapters is not great. It has been blocked in OS 3.0 and higher, many carriers also have found ways to block this.

turbosim is programmable so other SIM payloads could be used - however none have been made publicly available. This is currently a dead-end path. I would advise instead to use software based unlocks.

If a phone has been disconnected but not IMEI blocked (IMEI is usually blocked if the phone lost, stolen or it has been replaced under insurance) then software unlock will work fine as long as you make sure your baseband is kept at a version that can be unlocked.